Cattle-guard.



G. T. MQOORMIOK CATTLE GUARD.

APPLICATION FILED JUNE 25, 1913.

Patented Mar. 16, 1915.

18 Fig.1.

k IIVI/EIVTOR gyms T.McCormickJ ETEU STATES PATENT @FFEQE.

CYRUS "1. 1VlIoCDBMICK, OF FBEDERICKTOWN, MISSOURI.

CATTLE-GUARD.

Application filed June 25, 1913.

T all whom it may concern Be it known that l, CYRUS T. McCon- MICK, a citizen of the United States of America, residing at Fredericktown, Madison county, State of Missouri, have invented a certain new and useful Cattle-Guard, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a cattle-guard and more particularly to that class of cattle-guards in which the angular bars of the ordinary cattle-guard are replaced by rotary members provided with blades.

My invention consists in various novel features and details of construction, all of which are described in the following specification and pointed out in the claims appended hereto.

In the accompanying .drawings, which illustrate one form of cattle-guard made in accordance with my invention, Figure 1 is a plan view; Fig. 2 is a longitudinal section taken on the line 22 of Fig. 1; Fig. 3 is a cross section; Fig. 4c is an isometric projection showing one of the bearings; Fig. 5 is an enlarged detail view showing the manner of forming the trunnions on the rotary members; and Figs. 6 and 7 are enlarged views showing details of construction.

Like marks of reference refer to similar parts in the several views of the drawings.

10 represents the cross ties and 11 the stringers on which rest the rails 12. 13 are the side plates. All of these members may be of any usual and well-known construction. Arranged between the two stringers 11, and between the stringers and the side plates 13, are the rotary members l-l provided with blades. Each of these members 14 consists of a flat sheet of metal 15 and a pair of V-shaped sheets of metal 16. These V-shaped sheets of metal 16 are secured to the center of the sheet 15 at opposite sides thereof by means of rivets 17, or in any other suitable manner. Each of the six blades formed by the sheets 15 and 16 has its edge serrated or toothed, and the teeth 18 are bent out of the plane of the blade, alternate teeth being bent at opposite sides of the blade, as best shown in Fig. 7. .At the ends, each of the sheets of metal 15 Specification of Letters Patent.

Patented Mar. 16, 1915.

Serial No. 775,683.

and 16 is out in the manner best shown in Fig. 6, so as to leave portions 19 which are bent over, as best shown in Fig. 5, so as to form a substantially continuous, cylindrical trunnion for supporting the rotary member. fhe trunnions formed by the overturned parts 19 are adapted to fit into the two-part bearings 20, shown in detail in Fig. l. lhese bearings 20 are secured to the stringers 11 and side plates 13, the lower part of a bearing being secured in position and, after the rotary member has been placed in the lower part of the bearing, the top part is then secured so as to firmly hold the rotary member in place. Secured to the cross ties 10, adjacent to the rotary members 1%, are curved guard plates 21 which are adapted to prevent the foot of an animal being caught between the blades of a rotary memher and the cross ties 10.

When an animal attempts to cross the cattle guard, its foot will rest upon two of the blades of the rotary members, as shown in the dotted lines in Fig. 2. This will cause the teeth on the edge of the blades to be forced against the animals leg directly above the foot, and thus cause it to withdraw its foot from the guard. As the rotary blades are free to rotate, it will be impossible for an animal to wedge its foot between the blades.

Having fully described my invention, what I claim as new and desire to secure by Letters-Patent of the United States is:

1. A rotary member for cattle guards, comprising a plurality of sheets of metal secured together to form blades, the ends of said sheets having overturned portions forming substantially continuous, cylindrical trunnions.

2. A rotary member for cattle guards, comprising a fiat sheet of metal, and a pair of V-shaped pieces of metal with their apices secured to the center of said flat sheet of metal at opposite sides thereof, the ends of said sheets of metal having over-turned portions forming substantially continuous, cylindrical trunnions.

In testimony whereof, I have hereunto set my hand and affixed my seal in the presence of the two subscribing witnesses.

CYRUS T. MCCORMICK. [Ls] lVitnesses:

H. L. SNYDER,

CHAS. ALLBRIGHT.

Copies; of this patent may be obtained for five cents each. by addressing the Commissioner of Patents, Washington, I). G." 

